in flagler beach, florida, walt mazie has some serious questions for romney. >> i think romney will turn the economy around but it's the other issues that we don't know about. >> reporter: like what? >> like the medicare, health care issues. >> reporter: in haymarket, virginia, life-long republican dan stapleton echoes fears about the romney/ryan ticket. >> i think they want to change it so dramatically that we won't recognize it quite as medicare once they're done. >> reporter: by balancing the ticket with ryan, an advocate of major changes to entitlement programs, romney has prompted questions on what he would do about medicare. >> now mitt romney's attacking the president on medicare? >> reporter: and he's also opened the door to an avalanche of democratic attack ads. >> analysts say it could raise seniors' costs up to $6,400 a year. >> reporter: today a spokesperson for the romney campaign called these latest medicare issues "er" because his plan was not adequately explained in the questions. but, scott, the responses are relevant to romney's hopes. >> pelley: dean, thanks very much.